99.36: What happens to the inertia of an object wbct+t-;mdh .jw hh:l :6*ipvt 9+unto hen its velocity is doubled?

  02.14: An intrinsic property of matter is one thalz2 t11 z4 lttp2hn8hh 3wqm:st does not depend on the quantity of matter present. Which of the following p3:mtw h 1hln hp2zqs1t4 tl2z8roperties is NOT an intrinsic property?

  04.16: A 20 kg boulder rests on the surface of the Earth. Assume the Earth has q52o zgyql bm3xbsa97* l 1g/pm9 g/ sy3pxbl 1 7qola2*5gqmbzass $5.98 \times 10^{24} \; kg$ and $g = 10\;m/s^{2}$ . What is the magnitude of the gravitational force that the boulder exerts on the Earth?

  09.12: A 5.0 kg sphere is in free fall near the surface of the Earth. qow02 49d0zw bn eeclot)m 91aWhat is the magnitude of the gravitatio4b0mdw lc9oz0ateeq 1) n9ow 2nal force acting on the earth by the sphere? The Earth mass is $5.98 \times 10^{24} \; kg$ .

  00.09: Is it possible for an object’s v+1xr:u silhm8z-z k6ygzg5 e1elocity to increase while its acceleration5zg krzg:+ulxe- ih 86myz11s decreases?

  00.11: A certain particle undergoes erx,xo9x7 )6kmh5vc 45spd vki hs4,dkxratic motion. At every point in its motion, thekvv,dxshxm6 4c s) 5 k dx5ipox4k,h79 direction of the particle’s momentum is ALWAYS

  17.14: A block is suspended inugtalay 4.; m j64(;wjgh)spn9e hrty 02ssm8 the air at the end of a string held by a person. The person pulls on the string uniformly accelerating the block upward for a short time. During this time, which one of the following choices correctly identifies the Newton’s Third Law pair force to the force of the string on thehe8t;gsu40 na 4asmgprjy. )w9t; yl6j2m( sh block?

  07.18: In which one of the folloa +42hc/hsen2nvas 9e wing situations is the net force constantly zero on the obje a4s2e csh n9e2a/nhv+ct?

  13.28: An object is in free fall close to the ground. A person i +( u) c 7aohu2rh/ /pfpduiu-d:r6nelntervenes and slowscdudhu 7lo2u+6a/:/)ph f eu-(inrr p the object uniformly to rest. Which one of the following statements must be true about the magnitude of the acceleration of the object as it is being stopped by the person? The magnitude of the object’s acceleration is a and the magnitude of the acceleration from gravity is g.

  98.03: An object in equilibrium has three forces, F1 of 30 N,k ) .ymuapj71 wd7m5+w8davxu F2 of 50 N, and F3 of 70 N, acting on it. The magnitude of the resultant ofF1 and F2 i w1 8vam7uwuj5x kpa7 my.d+d)s

  01.07: A force of 6 Newtons and a forzze 23flghq4 ae+w*t,ce of 10 newtons can be combine to form a resultant with a magnitude of which of tgh f 4ltezq,ae*wz23+he following

  10.06: Which of the following statements is most h8n c.l lo2j: ,knjy-uclosely associated with Newton’s Third Law of ly :-,.o 2n hnjcuj8lkMotion?

  95.06: The reaction force does not,ha58prfm lnmkke r9mft8.zjy 9) x /; cancel the action force because:

  14.14: A box rests on the floor of an elevar/ 27ajc58vdw s*rpr ltor. The elevator is accelerating upward. Which one of the following choices best represents the Newton’s Third Law pair force to the * lr/pa7j8 dc2r5vrws gravitational force acting on the box by the Earth?

  15.15: A skydiver falls downward through the air with constant s8x gk*:ipwyl/vu3.6mxme,+:fa z qzm0gzl)l peed. Which one of the following choices correctly dax3 :ge 860zxm. li m)*l z:upy,q zwgl+/vfmkescribes the Newton’s Third Law pair force to the air resistance acting on the skydiver during the fall?

  06.08: A baseball is thrown by a pitcher with a speed of )(k pr 8vfl2je/c 7kdl35 m/s. The batterswings and hits the ba(2ek/vjcld)8r fk 7 plll. The magnitude of the force that the ball exerts on the bat is always

  11.13: A physics book sits at rest on a table. On top of the boo vn j0lp37tp6ak is a calculator, also at rest. Which one of the following choices is the Newton’s Third Law pair force to the force that the table exerts on the p0 7pv3lt n6jabook?

  05.06: The students in a Physics I x //7rzbiv92dc,so wp4.y10mwph n hw1z - pybclass were in lab conducting an experiment related to Newton's Second Law. The collected da zhv7.whp oy,w/bixb cdp9nz-0s /42r1p1wy mta were displayed on the graph at the right. From this graph, what conclusions can the students make?

  99.03: If the net force on an object were doubled wh ndkmu,e: 5 l,6t+1xxgp o9wdrile at the same time the mass of the objectdnt 651+x9gk,rdm,pu w :loex was halved,then the acceleration of the object is

  96.15: A car whose mass is 1500 kg is acce3 0iafbq0yfh1 p*;zd85 p zjgflerated uniformly from rest to a speed of 20 m/s in 10s. The magnitude p;f 3g1pa i0*f zz8bf0jqy5hdof the net force accelerating the car is:

  99.05: A tractor-trailer truck is travek )la ) f0w9mdspj lt8/z(jvi8ling down the road. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer applies oni /jjkp90()a8 df mt 8)zvswll the tractor is

  99.16: Which of the following principles best exbov9 ./qch3rvexc; / qplains why large tractor-trailer trucks generally acceleratec3cxq vv/oh r./ 9q;eb much more slowly that automobiles?

  99.19: A 50 kilogram skater at rest on,-sdg, b u-lsp a frictionless rink throws a 2 kilogram ball, gi,up -sdg-b s,lving the ball a velocity of 10.0 m/s. Which statement describes the subsequent motion?

  00.13: An object near the surface of the t sg556iofqz) earth with a weight of 100 newtons is accelerateg) qtf5si65z od at $4\;m/s^{2}$ . What is the net force on the object?

  98.25: A car whose mass is tn k4)k7c6u 9zxvuw(x1200 kg is accelerated from rest by a constant force of 2400 N. What is the speed of the car 8.0 s txxk7)v ck z4u n(u96wafter beginning?

  98.32: A 3.0-kg block with initial speed 4.0 m/s slides across a rouglbu txt.t20vyc5s.93ril xz0h horizontal floor before coming to rest. The frictional force acting on the block is 3.0 N. How ftx 0r .ivyztlc2b3su 90lx.5tar does the block slide before coming to rest?

  95.38: A block with initial veloci7v ;fuy:s8ms bty 4.0 m/s slides 8.0 m across a rough horizontal floor before coming to resus:7;y bvmfs8 t. The coefficient of friction is:

  09.21: A 20.0 kg box rw hqh:t mjq n4ay7tb46 ,6e;dsemains at rest on a horizontal surface while a person pushes directly to the right on the box with a force of 60N. The coeffi7:h st4b yq4etnwh j6,dmaq6;cient of kinetic friction between the box and the surface is $\mu_k$ = 0.20. The coefficient of static friction between the box and the surface is $\mu_s$ = 0.60. What is the magnitude of the force of friction acting on the box during the push?

  13.16: A block initially movir7: ) jcanzuh*,1kpw(tckc6 gng at 8 m/s accelerates uniformly to rest on a horizontal surface. The block travels a distance of 12.0 m during the6wu 1rh),c7:c p(k*nkta cgj z slide. Which one of the following choices best represents the coefficient of kinetic friction between the surface and the block?

  00.21: A car of mass m slides .zru((anb(r b across a patch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic frictio (rb(bzarnu.(n between the tires and the dry road is μ .
If the car had a mass of 2m, it would have skidded a distance of

  00.22: A car of mass m slides across a v81(ctt+ a4t 8zlcpo apatch of ice at a speed v with its brakes locked. It then hits dry pavement and skids to a stop in a distanced. The coefficient of kinetic friction between the tires and the dry road4( zc t lv1pt8oca8at+ is μ .

If the car had a speed of 2v, it would have skidded a distance of

  04.32: he driver of a car makes. 6s(q(bs0zzvl0 nec:,jq hmz an emergency stop by slamming on the car's brakes and skidding to a stop. How far would the car have skidded if it had been traveling twice(0(.,qmz: lh j e s6cqzbvzn0s as fast?

  99.39: The driver of an automobile must carefully control each of the following wxl/02f (c idkdevices. Which of these devices can cause an acceleration i(kcx i/w0 fld2n a moving car?
(1) the break pedal ( 2) the gas pedal ( 3) the steering wheel

  00.25: The net force on a rocket with a weight of 15000 newtons is 24000 news0 m5*wjrqg )f,.jyg/uh (rlwtons. About how much time ismf5)y (ggh, w*r s/wlj0u .rjq needed to increase the rocket ’ speed from 12 m/s to 36 m/s near the surface of the Earth at takeoff?

  07.21: A box slides to the right ac ) y*izxb.r o8e+u-kzaross a horizontal floor. A person called Ted exerts a force T to the right on the box. A person called Mario exerts a force M to the left, which is half as large as the force T. Given that there is friction f and the box accelz o)yu8.kx-*azieb +rerates to the right, rank the sizes of these three forces exerted on the box.

  02.27: The diagram below shows three roller coaster tracks ofw rz*6-mvzft abd83 svg1q9 h 48.mcji equal length. Assume that on all tracks t-9j3izv* 4qgmdwa8t b cvh6f.z m1r8she roller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks to the finish.
If all roller coaster carts start at the positions shown, on which track would the roller coaster cart be traveling the fastest at the finish?

  02.28: The diagram below shows three roller coaster tracks of equal length. Assux8e2lnr 3n 1u: u(-(s.,vfyoxw o calq80y cvhme that on all tracks the roc1fc0, 8 a(vo h2llv8nuqxe3 u s:oxy .rwy(n-ller coaster carts start from rest at the same elevation and moves frictionlessly over the tracks to the finish.
If all roller coaster carts start at the positions shown, on which track would the roller coaster cart reach the finish first?

  02.29: Assume the rollercoaster cartrolls frictionlesslw4qr-j jda9*it i8 4dz kl62ojy along the curved track from point A to point C under the influence of gravity. What*j8zid4t6 jo-iaqk j9l r w2d4 would be the direction of the cart's acceleration at point

  02.40: A box with a mass of 50 kg is dragged across the floor by a rope whijr jrlzoh0z; p q *fxj8bq3ha.6;m95ech makes an angle of 300 with the horizontal. Which of the following would be closest to the coefficient of kinetic friction between the box and the floor if a 250 newton force on the rope is required to move the crate at a constant sph*0;e;rhf63j xa8pbz l rmqo.j9j5q zeed of 20 m/s as shown in the diagram?

  04.40: A 6.0 kg block initially at rest is pushed against a wall 8u+/ol ire bl,by a 100 N force as shown. Thecoefficient of kinetic friction is 0.30 while the coefficient of static friction is 8 eul r,bi+lo/0.50. What is true of the friction acting on the block after a time of 1 second?

  05.10: A homeowner pushes a lawn mower across a horizontal patch of grass withd:ccrx :jri/vcvx c.g lt +:sof( 5d28 a const+c2x (vcjgcvtf::/rod:ci8 sr d.5 xlant speed by applying a force P. The arrows in the diagram correctly indicate the directions but not necessarily the magnitudes of the various forces on the lawn mower. Which of the following relations among the various force magnitudes, W, f, N, P is CORRECT?

  06.14: A book leans against a crate on a tv 10hgyau ,uj+:5k7nplw:h i/a:csc qable. Neither is moving. Which of the following statements concerning this situation is CORRn y,+:7jkvq c5:l1u /0acpugh:sh ai wECT?

  06.15: A crate of toys remains at rest on a sleigh as the sleigh is pul8oijlw-vyl /5zta*)t 7,c *r+ peiceo led up a hi/ *e) rvo+ wicet8yl-lto,a 5zp7jc*ill with an increasing speed. The crate is not fastened down to the sleigh. What force is responsible for the crate’s increase in speedup the hill?